DS2155G/T&R Maxim Integrated Products, DS2155G/T&R Datasheet - Page 69
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DS2155G/T&R
Manufacturer Part Number
DS2155G/T&R
Description
Network Controller & Processor ICs T1/E1/J1 Single-Chip gle-Chip Transceiver
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2155L.pdf
(238 pages)
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12.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 0/Output Data Format (ODF)
Bit 1/TSYNC I/O Select (TSIO)
Bit 2/TSYNC Mode Select (TSM). Selects frame or multiframe mode for the TSYNC pin. See the timing
diagrams in Section 35.
Bit 3/TSYNC Double-Wide (TSDW). (Note: This bit must be set to 0 when IOCR1.2 = 1 or when IOCR1.1 = 0.)
Bit 4/RSYNC I/O Select (RSIO). (Note: This bit must be set to 0 when ESCR.0 = 0.)
Bit 5/RSYNC Mode Select 1(RSMS1). Selects frame or multiframe pulse when RSYNC pin is in output mode. In
input mode (elastic store must be enabled), multiframe mode is only useful when receive signaling reinsertion is
enabled. See the timing diagrams in Section 35.
Bit 6/RSYNC Mode Select 2 (RSMS2)
Bit 7/RSYNC Multiframe Skip Control (RSMS). Useful in framing format conversions from D4 to ESF. This
function is not available when the receive-side elastic store is enabled. RSYNC must be set to output multiframe
pulses (IOCR1.5 = 1 and IOCR1.4 = 0).
I/O PIN CONFIGURATION OPTIONS
0 = bipolar data at TPOSO and TNEGO
1 = NRZ data at TPOSO; TNEGO = 0
0 = TSYNC is an input
1 = TSYNC is an output
0 = frame mode
1 = multiframe mode
0 = do not pulse double-wide in signaling frames
1 = do pulse double-wide in signaling frames
0 = RSYNC is an output
1 = RSYNC is an input (only valid if elastic store enabled)
0 = frame mode
1 = multiframe mode
T1 Mode: RSYNC pin must be programmed in the output frame mode (IOCR1.5 = 0, IOCR1.4 = 0).
0 = do not pulse double-wide in signaling frames
1 = do pulse double-wide in signaling frames
E1 Mode: RSYNC pin must be programmed in the output multiframe mode (IOCR1.5 = 1, IOCR1.4 = 0).
0 = RSYNC outputs CAS multiframe boundaries
1 = RSYNC outputs CRC4 multiframe boundaries
0 = RSYNC outputs a pulse at every multiframe
1 = RSYNC outputs a pulse at every other multiframe
RSMS
7
0
RSMS2
IOCR1
I/O Configuration Register 1
01h
6
0
RSMS1
5
0
RSIO
4
0
69 of 238
TSDW
3
0
TSM
2
0
TSIO
1
0
ODF
0
0
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